Teach yourself line dancing basics through instruction videos teaching popular STEPS and some DANCES putting those STEPS into action . Remind yourself of the STEPS, view the STEPS mini videos to jog your memory. If you have some experience, you can use this app as an aid to teach line dancing basics to others.
In the very early days I would suggest that you choose one of the DANCES and learn the STEPS that feature in your chosen dance. Learning the STEPS for, and dancing, one dance is fun and may motivate you to learn more STEPS and DANCES. If you prefer, you can, of course, learn all (or some) of the STEPS before learning and dancing and dance.